I'm not sure if you mean you didn't know that a full screen was an option (it was added in the last overhaul of Jigidi earlier this year), or not. It's that icon with 2 arrows pointing to opposite corners, up in the right corner of the solving screen, along with the pause arrow and the plus and minus icons. I always use it for large puzzles, especially on the laptop--that was one change that Jigidi made that I did like! I'm glad you had fun with this!